Description

Mouse TGF beta 1 (Transforming Growth Factor beta 1) is a member of a superfamily of homologous, disulfide-linked, homodimeric proteins that regulate the proliferation and differentiation of normal and transformed cells. Human TGF beta 1 is a 25 kDa protein with each subunit containing 112 aa residues. TGF beta 1 is secreted from the many cell types in a complex with LAP (Latency Associated Peptide) and also with LTBP (latent TGF beta binding protein). Disassociation is thought to happen in the extracellular matrix via proteases and/or integrins. Regulatory T cells are a recently identified source of TGF beta 1 thought to be a key player in their suppressive functions. TGF beta 1 binds through TGF beta receptors (of which there is a large family). The protein is highly conserved across all mammalian species.

The ED50 of this protein, as measured by inhibition of IL-4 induced proliferation in HT-2 cells, is less than or equal to 40pg/mL. This corresponds to a specific activity of greater than or equal to 2.5 x 107 units/mg.

Conjugate

Unlabeled

Recombinant

Yes

For Use With (Application)

Functional Assays , Cell Culture

Molecular Weight

Mature TGFb1 polypeptide has a predicted molecular mass of 12,794. On reducing SDS-PAGE the protein migrates as a 13kDa polypeptide and on non-reducing SDS page the cystine-linked homodimer migrates as a 25kDa protein.